Year	Number
1985	218530
1989	326000
1990	334000
1991	334000
1992	283000
1993	271000
1994	268000
1995	356000
1996	363600
1997	375270
1998	357100
1999	363650
2000	337700
2001	403600
2002	413350
2003	408200
2004	381800
2005	410800
2007	410000
2008	407000
2009	407988
2010	389358
2011	384420
2012	385170
2013	389170
2014	419170
2015	457670
2016	459800
2017	476000
2018	499750
2019	607000
2020	532000